Marina, a full-time housewife, worked as a teacher before getting married. One day, she meets Seto, her former student. Seto lost his girlfriend's job and was depressed. Marina comforts and encourages her student. However, despite her kindness, Seto begins to feel dark emotions. The female teacher Marina, who was supposed to have cut off her thoughts, appeared in front of her again. In broad daylight, I stole my girlfriend's husband's attention and thought about her married woman, Marina.